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Printing failure after installing 0.6 nozzle  

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(@mb-2)
Eminent Member
Printing failure after installing 0.6 nozzle

MK3S+ Firmware 3.14.1

Prusament PETG straight from the dryer.

0.6 Nozzle

Recently installed a 0.6 nozzle and appropriate configuration in Prusa  Slicer. Since then, quality has been all over the place. 

One of many first layer cal shown here:

 

Tried a multi square print that looked like this:

Tried a couple of functional prints that looked like this:

I've installed nozzles before by the book, including updating configurations and making the hardware changes, but never had it fail like this.

tl;dr: I can lay down a decent first layer, but I cannot print actual things after a nozzle change. There is no blobbing or leaking. It just seems, at least to me, not be laying down a good first layer on actual prints vs the calibration. 

Posted : 22/12/2024 9:29 pm
Diem
 Diem
(@diem)
Illustrious Member

The built-in calibration routine is only intended for 0.4mm nozzles, you will need to calibrate the 0.6mm nozzle by observation. 

Cheerio,

Posted : 23/12/2024 2:34 pm
mb
 mb
(@mb-2)
Eminent Member
Topic starter answered:
RE: Printing failure after installing 0.6 nozzle

 

Posted by: @diem

The built-in calibration routine is only intended for 0.4mm nozzles, you will need to calibrate the 0.6mm nozzle by observation. 

Cheerio,

So, help me understand this better....even though I calibrated it and got a decent first layer cal using the internal routine, I need to do it manually for the 0.6 nozzle?

I kinda thought that's what I was doing with the 9 square test, which laid down ok for the most part except for the bottom middle square. I also tried a full sheet square that failed almost immediately. 

Posted : 23/12/2024 3:14 pm
Diem
 Diem
(@diem)
Illustrious Member

Yes, the built-in routine assumes a 4mm nozzle and extrudes accordingly; this is under-extruding for a 6mm nozzle.  Your 9 square is a better choice 'though it looks like you may have some fingerprints on the print sheet.

Cheerio,

Posted : 23/12/2024 3:33 pm
Robin
(@robin)
Noble Member
RE: Printing failure after installing 0.6 nozzle

What diem said used to be true, but since firmware 3.13 the internal first layer calibration works with different nozzle diameters:

https://help.prusa3d.com/article/different-nozzle-types_2193#first-layer-calibration-of-other-nozzles

 

 

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Find out why this is pinned in the general section!

Posted : 23/12/2024 4:45 pm
Diem
 Diem
(@diem)
Illustrious Member

Thanks for the correction, I've only used 0.4mm nozzles on the Mk3 in the last year and hadn't noticed...

So what I wrote above only applies if you haven't changed      Settings -> HW setup -> Nozzle

Cheerio,

Posted : 23/12/2024 7:59 pm
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